Wide mouth flask



FIG. 1 is a side view of a wide mouth flask showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is back view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top perspective view thereof.

The broken lines illustrate portions of the wide mouth flask which form no part of the claimed design. 

CLAIM The ornamental design for a wide mouth flask, as shown and described. 